A simple geographic map showing how the North American Plate (to the north) collides with the Pacific Plate (to the south). Their boundary creates the Aleutian Trench and consequently the Aleutian Island chain.
A simple geographic map showing how the North American Plate (to the north) collides with the Pacific Plate (to the south). Their boundary creates the Aleutian Trench and consequently the Aleutian Island chain.